A-type star · white star

HR 3921

HR 3921 is a white star in the constellation Hydra 498 ly from Earth. Its surface is about 9,520 K, about 1.6 times the Sun's surface temperature, and it shines at 65.40× the Sun's brightness. At magnitude 6.2 it is within reach of 50 mm binoculars; the light you see left it 498 years ago.

498 lybrightness mag 6.23A2/A3III

Also catalogued as HD 85905 · HIP 48584

9,520 K
temperature
6.23
apparent magnitude
65.40× ☉
luminosity vs Sun
A2/A3III
spectral type
Distance & comparison with our Sun
498 years
at light speed from Earth
1.65×
as hot as the Sun
65.40×
the Sun's light output
0.31
absolute magnitude
Explore from here · roam the neighborhood
HR 3921A-type
Sky regionHydrathis direction
StarHR 385830 ly
StarHR 396345 ly
StarHR 393349 ly
StarGamma Hyastar
StarZeta Hyastar
Nearest stars
Bright stars in Hydra
Can you see it tonight?
BINOCULARS NEEDED
Brightness mag 6.2To see it 50 mm binocularsLook toward Hydra

Star data from the HYG database v4.2 (Astronexus, CC BY-SA 4.0). Temperature and colour computed by gravityfinder from the B-V colour index; the illustration is generated from that temperature, not a photograph.